Iron transformation and transportation in the Pan-Okhotsk region
| Project/Area Number |
19681001
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (A)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Environmental dynamic analysis
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
NISHIOKA Jun Hokkaido University, 低温科学研究所, 准教授 (90371533)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥24,960,000 (Direct Cost: ¥19,200,000、Indirect Cost: ¥5,760,000)
Fiscal Year 2009: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2008: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2007: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
|
|---|
| Keywords | 鉄 / 環オホーツク / 中層循環 / 生物生産 / オホーツク海 / 物質循環 / 化学形態 / アムール川 |
|---|
| Research Abstract |
We found extremely high concentrations of dissolved and particulate iron in the Okhotsk Sea Intermediate Water (OSIW) and the North Pacific Intermediate Water (NPIW), which are affected by water ventilation processes caused by sea ice formation in the north-western continental shelf region of the Sea of Okhotsk. We can estimate the amount of diss-Fe in the intermediate layer. The Fe flux section cross the Oyashio is as 3.1×10^5~6.3×10^5μmol Fe/m^2/yr. The estimated annual upward flux is 28.6μmol Fe/m^2/yr in this region. Our data suggests that the consideration of this source of iron is essential in our understanding of the spring biological production and biogeochemical cycles in the western subarctic Pacific.
|
Report
(4 results)
Research Products
(35 results)
-
-
-
-
-
[Journal Article] Changes in iron concentrations and bio-availability during an open ocean mesoscale iron enrichment experiment in the western subarctic pacific2009
Author(s)
Nishioka, J., S. Takeda, Y. Kondo, H. Obata, T. Doi, D. Tsumune, C.S. Wong, W.K. Johnson, A. Tsuda
-
Journal Title
SEEDS II, Deep Sea Res. part II
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
[Journal Article] Iron input into the western subarctic Pacific, importance of iron export from the Sea of Okhotsk2007
Author(s)
Nishioka, J., T. Ono, H. Saito, et al., T. Nakatsuka, S. Takeda, T. Yoshimura, K. Suzuki, K. Kuma, S. Nakabayashi, D. Tsumune, H. Mitsudera, W.K. Johnson, A. Tsuda
-
Journal Title
Journal of Geophysical Research 112
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Iron supply to the western subarctic Pacific: Importance of iron export from the Sea of Okhotsk2008
Author(s)
Jun Nishioka, Tsuneo Ono, Hiroaki Saito, Takeshi Nakatsuka, Shigenobu Takeda, Takeshi Yoshimura, Koji Suzuki, Kenshi Kuma, Shigeto Nakabayashi, Daisuke Tsumune, Humio Mitsudera, W. Keith Johnson, Atsushi Tsuda
Organizer
Ocean Sciences Meeting
Place of Presentation
Orlando USA
Year and Date
2008-03-08
Related Report
-
-
-
-
-
-
